public class Example12_2 { 
   public static void main(String args[]) { 
       Thread speakElephant;            
       Thread speakCar;                
       ElephantTarget elephant;         
       CarTarget car;                   
       elephant = new ElephantTarget();
       car = new CarTarget();
       speakElephant = new Thread(elephant) ;   
       speakCar = new Thread(car);              
       speakElephant.start();                     
       speakCar.start();                        
       for(int i=1;i<=15;i++) {
          System.out.print("主人"+i+"  ");
       }  
   }
}

